03/31/2026
Sleep deprivation is not just fatigue. It is insulin resistance, elevated cortisol, and appetite dysregulation -- packaged as a busy lifestyle.
As an endocrinologist, I see this commonly. Patients doing everything right with diet and exercise, but not sleeping well. And metabolic markers do not lie.
5 days of 4-hour sleep is enough to increase glucose, insulin, cortisol, and leptin simultaneously. That is not a minor disruption -- that is a full hormonal stress response.
Sleep is part of the prescription.
Save this if you have a patient or you are the patient, who thinks sleep is optional.💤